Sparking plug.



T.M..&G.ET.-WAYMAN.

SPAEKING PLUG. APPLICATION FILED MABJ, 1913 RENEW-ED, MAY 23. 1914. 1,1Q3fi3h P ented Jan. 5, 1915.

WWW?) WNW ATTORNEY w l v H.

mm m

, mm .0 25 J i fig g I P fi. w J 7 M W M\ w 6 a v J N i, M

anorras at. wavaraar arm nanny *r..- wavaaanf, or-rrrrs a 1-: an, rnn'nsrtvanra.

SlWltRK-INW: PLUtlil.

ztprctficaniou of Letters Patent.

Pahenteddam '5, rain dppl et on area llildlfih 1... rate, serial to. mate la en wea May 191a. Serial No. aaaeat.

To all whom it may concern;

Be it'known t at vveflllnrorms Wavaaanand Galena 'l. Warmest, citizens of the ll nited States of America, residing at Pittsburgh, in the county of Allegheny and State especially designed for internal combustion en mes, commonly styled gas engines? ur invention aims to pro"vide:l"irst, a ,s arking plug having a movable electrode t at isautomatically shifted to produce a spark. Second, a sparking plug having a stationary electrode and a pneumaticall actuated movable electrode that is held normally retracted relatively to the stationary electrode. Third, a sparking plug having a stationary electrode and a movable electrode which is shifted to an extended positi'onto produce a spark when the cylinder of an engine is charged and shifted to a' retracted position when an explosion occursin the cylinder. Fourth, an automatic sparking device embodying a stationary electrode and a shiftable electrode both of which are come pactly arranged in a ported body whereby gases from the cylinder of an engine can be ntiliaed for shifting the movable electrode ot a sparking device. Filth, a pneumatic sparking plug consisting of comparatively few parts that are inexpensive to manufacture, easy to assemble and highly eflicient tor the purposes for which they are mv tended.

@ur invention further aims to accomplish the above results b a mechanical construction that will hereinalterspecifically described and then claimed, and reference will now he had to the drawing, wherein Fi' are l is'a vertical sectional view-show ing t e movableelectrode in a retracted ositlon, and Fig. 2 is a similar view showing the electrode in. an extended position.

lin the drawing, thereterence numeral 1 denotes, by the way ofan' example, a portion of an on me cylinder having thetop thereof provide with an opening? and arranged w ithir said openingis the inner and at a ug i P To retain the plug 3 within the .opening 2 mid is p ovided ith a: t er a late a flange that'can he secured to the cylinder 1 by screw bolts 5 or other fastening means. i I The plug 3 is provided with a longitudinal stationary electrode '6, said electrode beinglocated contiguous to the wall of said plug. The inner end of the electrode has an lL-shaped terminal "'2' and connected to the outer end thereof by a conventional term of means 8 is a leading-in wire 9.

he plug body 3 is provided with a 'longltudinal cylindrical bore 10 having the walls thereof, at the inner end screw th rea di'ed., as at 11 to accommodate a plug 12, WhlCh has a longitudinal openin 13.

jllhe top of the p lugbody 3 1s provided w th a cup or housing 14 in communication wlth the lbOl'Q 10 through the medium of an y pening 1-5 that a'lines with the opening '3 normally closed by a detachable cap 16.

Movable in the openings .13 and 15 is a piston rod ll and this rod, within the bore 1-0, is provided with a recessed piston head 18. The piston head 18 has packing rings 19 of a conventional form and the recess 20 of said head has the inner end thereof provided With a radially disposed port 21.

The plug body 3 is provided with ports '22 and 23, the former establishing communication fhetween the cylinder 1 and the end of the ,bore 10., while the latter establishes communication between the cylinder l and the hore 10 at a point intermediate the ends the eof.

llhe ended the piston rod 17, within the ,cup 14 is provided with a nut or head 24- and encircling said piston rod, between said nut and the bottom ot the cup 14 is a coiled compression spring 2'5, the tension of which is sufiic entto hold the iston head 18 in a retracted position. with the port 21 out of registration with the port 23.-

Operation z-When gas or an explosive of the plug 12. The cup or housing 1-1 is initial position of the piston head 18 is elevated, As the compression takes place in the evlinder l the port 22 admits the mixture above the piston and lowers the piston' nntil theport 21 is in position to register with the port 23. Pressure .on both sides of the piston iseonalized and the spring 25, h ch has heen compressed during a down strolte of the piston is now "tree to shift the :rnova'ble elech'ode quickly to its initial position, thus in: ng 1:- which creates a "spark which ignites the charge within the whileinfthe drawing there is illustrated a preferred embodiment'of the invention, it is to be understood that the structural elements are susceptible to such variations and modifications as fall withinthe scope of the appended claims.

What we claim is 1. In a sparking plug, .a cylinder, a sta tionary electrode extending therein, a movable electrode extending into said cylinder, meansv in connection with said movable electrode whereby the charging of said cylinder shifts said movable electrode toward said stationary electrode to produce a spark, and means in connection with said movable electrode and cooperating with a detonation of the contents of said cylinder in shifting said electrode to a retracted position.

2. The combination wi h a cylinder, of a plug carried thereby, a stationary electrode carried by said plug and extending into said cylinder, said plug having a chamber formed therein in communication with said cylinder, a spring held movable electrode extending through the chamber of said plug, and a pressure impacted means within said cham; ber and carried by said movable electrode whereby the charging of said cylinder shifts said movable electrode until the pressure is equalized upon both sides of said means.

a 3. In a sparking plug, a cylinder, achambered plugbody carried thereby, a stationary electrode carried by saidplug body and extending into said cylinder, a" piston head movable in the chamber of said plug body and adapted to be shifted within said chamber by a charge in said cylinder until pressure upon both sides of'said head is equalized, a movable electrode carried. bysaid piston head. and means at a point removed from said chamber for supporting said pistonhead in a position to be actuated by a charge from said cylinder.

4. The combination with a cylinde'r,of a chambered plug body in communication therewith, a stationary electrode extending into said cylinder, a movable electrode arranged longitudinally of the chambered bodvand adapted-to be shifted toward said stationary electrode, and a ported piston head carried by said electrode and adapted to be moved by a charge in said cylinder until the charge in said cylinder enters said ported piston head. v

5. The combination with a cylinder, of a chambered plug body in communication therewith, a stationary electrode extending into said'cylinder, a movable electrode arranged longitudinally of the chambered 5 body and adapted to be shifted toward said stationary:-.electrode, a ported piston head carried bysaid electrode and adapted to be 'moved by pressure derived by the compressing' of a charge in said cylinder until the charge in said cylinder enters said ported piston head, and means placed under tension by a movement of said piston head for restoring said headto its normal position when thepressure derived from the charge is equalized upon both sides of said head.

6. The combination with a cylinder, of a vertical plug body "carried thereby, a stationary electrode extending into said cylinder, a spring supported movable electrode carried by' saidflplug body, a piston head carried by said electrode, and movable by impat of pressure derived from the compressing of an explosive charge in said cylinder, said plug body having a port formed therein for the application of pressure from the compressing charge to shift said piston head, and means in connection with said piston head for equalizing the pressure from said charge upon both sides of the piston head whereby said electrode can be elevated.

7. The combination with a cylinder, of alvertical plug body carried thereby, a stationary electrode extending into "said cylinder, a spring supported movable electrode carried by said plug body, a piston head carried by said electrode, capable of being shifted in one direction by pressure derived from the compressing ofan explosive charge in said cylinder, said plug body having a port formed therein whereby ressure derived from the compressing o the charge in said cylinder contacts with and lowers said piston head, means in connection with said piston head for equalizing upon both sides of the piston head the pressure derivedv from said charge whereby said electrode can'be'elevated, and means arranged exteriorly of said plug body for automaticallyshifting said piston head when the pressureis equalized upon both sides thereof. 8. A sparking plug comprising a fixed electrode, a movable electrode, means wherebyvsaid movable electrode is shifted toward said stationary electrode by pressure derived from the compressing of an explosive mixture, means whereby the movement of said movable electrode toward said stationary electrode is arrested at a-predetermined point, and means for shifting said movable electrode away from said stationary electrode simultaneously with the arresting of the movement of the movable electrode toward the stationary electrode thereby creating a spark.

9. A 'sparking plug comprising a stationary electrode. a movable electrode including a piston head adapted to be impacted by pressure derivedfr'om the compressing of an explosive charge thereby shifting said movable electrode to engage the stationary ltl electrode, means whereby the pressure is equalized upon each side said piston head, and means whereby the movable electrode is automatically shifted from the stationary electrode to create a spark simultaneously with the equalizing of the pressure upon each side of said piston head.

10. A sparking plug comprising a stationary electrode, a movable electrode automatically actuated to engage said stationary electrode by pressure derived from the compressing or" an explosive mixture, a tensioning element associating with said movable electrode, and means whereby the pressure acting upon said movable electrode is equalized thereby enabling said tensioning element to shift said movable electrode to term a spark.

ll. A sparking plug comprising a stationary electrode, a movable electrode automatically actuated to engage said stationry electrode by pressure derived from the campressing of an explosive mixture, tensioning element associating with said movable electrode, means whereby the pressure acting upon said movable electrode is equalized thereby enabling said tensioning element torshil t said movable electrode to term a spark, and means whereby said ten- .sioriing element is adjusted for the produciug ot a spark at a fixed point during the compressing of the explosive charge.

12. A. sparking plug comprising a stationary electrode, a movable electrode, means for supplying pressure againstsaid movable electrode to shift it to the stationary electrode, means for equalizing the pressure acting upon said movable electrode thereby arresting movement thereof toward the stationary electrode, and means for shifting said movable electrode away from the stationary electrode simultaneously with the equalizin of the pressure thereby creating a spar r.

13. A sparking plug including a movable electrode provided with a piston head adapted to have one side thereof impacted by pressure for shifting the electrode toward the stationary electrode, and means whereby the impacting pressure can be equalized upon both sides of the piston head to arrest the movement of the movable plunger.

ll. A sparking plug including amovable electrode provided with a piston head adapted to have one side thereof impacted by pressure for shifting the electrode to ward the stationary electrode, means whereby the impacting pressure can be equalized upon both sides of the piston head to arrest the movement of the movable plunger, and

means for-automatically shifting said movable plunger in an opposite direction simultaneously with the equalizing of the pres sure upon both sides of the piston head.

in testimony whereof we alfii: our signatures in the presence of two Witnesses.

THQMAS M. WAYMl-thl. GAREY T. lVAYlMlAN.

l litnesses MAX H. SROLOVITZ, KARL H. BUTLER. 

